<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入内容" clearable v-model="queryInfo.query" @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <!-- type="index" 设置索引列 -->
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <!-- {{ scope.row }} 可以获取到当前行的所有数据 -->
            <el-switch
              v-model="scope.row.mg_state"
              active-color="#13ce66"
              inactive-color="#ff4949"
              @change="userStateChanged(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- {{ scope.row }} -->
            <!-- 编辑按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配权限按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[2, 4, 6, 8]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配用户对话框 -->
    <el-dialog title="分配角色" :visible.sync="setDialogVisible" width="50%" @close="setRoleDialogClosed">
      <p>当前用户：{{ userInfo.username }}</p>
      <p>当前角色：{{ userInfo.role_name }}</p>
      <el-select v-model="selectedRoleId" placeholder="请选择">
        <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"> </el-option>
      </el-select>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo"> 确 定 </el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    data() {
      var checkEmail = (rule, value, cb) => {
        // 验证邮箱的自定义规则
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-z0-9_-])+(\.[a-zA-Z0-9_-])+/ // 验证邮箱的正则表达式
        if (regEmail.test(value)) {
          return cb()
        }
        cb(new Error('请输入合法的邮箱'))
      }
      var checkMobile = (rule, value, cb) => {
        // 验证手机号的自定义规则
        const regMobile = /^(0|86|17951)?(13[0-9][15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
        if (regMobile.test(value)) {
          return cb()
        }
        cb(new Error('请输入正确的手机号'))
      }
      return {
        // 获取用户列表的参数对象
        queryInfo: {
          query: '',
          // 当前页码
          pagenum: 1,
          // 当前页面显示多少数据
          pagesize: 2
        },
        userlist: [],
        total: 0,
        addDialogVisible: false, // 控制添加用户对话框的显示与隐藏
        addForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
        }, // 添加用户的表单数据
        addFormRules: {
          username: [
            { required: true, message: '请输入用户信息', trigger: 'blur' },
            {
              min: 3,
              max: 10,
              message: '用户名的长度在 3 到 10 个字符',
              trigger: 'blur'
            }
          ],
          password: [
            { required: true, message: '请输入密码', trigger: 'blur' },
            {
              min: 6,
              max: 15,
              message: '密码的长度在 3 到 10 个字符',
              trigger: 'blur'
            }
          ],
          email: [
            { required: true, message: '请输入邮箱', trigger: 'blur' },
            { validator: checkEmail, trigger: 'blur' }
          ],
          mobile: [
            { required: true, message: '请输入手机号', trigger: 'blur' },
            { validator: checkMobile, trigger: 'blur' }
          ]
        }, // 添加表单的验证
        editDialogVisible: false, // 控制修改用户对话框的展示与隐藏
        editForm: {}, // 查询到的用户信息对象
        editFormRules: {
          email: [
            { required: true, message: '请输入邮箱', trigger: 'blur' },
            { validator: checkEmail, trigger: 'blur' }
          ],
          mobile: [
            { required: true, message: '请输入手机号', trigger: 'blur' },
            { validator: checkMobile, trigger: 'blur' }
          ]
        }, // 修改表单的验证规则对象
        setDialogVisible: false, // 控制分配角色对话框的显示与隐藏
        userInfo: '', // 需要被分配角色的set
        rolesList: [], // 所有角色的数据列表
        selectedRoleId: '' // 已选中的角色
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      async getUserList() {
        // 获取用户列表
        const { data: res } = await this.$http.get('users', {
          params: this.queryInfo
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取用户列表失败')
        }
        console.log(res)
        this.userlist = res.data.users
        this.total = res.data.total
      },
      handleSizeChange(newSize) {
        // 监听 pagesize 改变的事件
        // console.log(newSize)
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      handleCurrentChange(newPage) {
        // 监听 页码值 改变的事件
        // console.log(newPage)
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },
      async userStateChanged(userinfo) {
        console.log(userinfo)
        const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if (res.meta.status !== 200) {
          userinfo.mg_state = !userinfo.mg_state
          return this.$message.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功')
      },
      addDialogClosed() {
        // 监听添加用户对话框的关闭事件
        this.$refs.addFormRef.resetFields()
      },
      addUser() {
        // 点击按钮添加新用户
        this.$refs.addFormRef.validate(async valid => {
          // 发起添加用户的网络请求前的预校验
          if (!valid) return
          // 可以发起添加用户的网络请求
          const { data: res } = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) {
            return this.$message.error('添加用户失败')
          }
          this.$message.success('添加用户成功')
          // 隐藏添加用户的对话框
          this.addDialogVisible = false
          // 重新获取数组列表
          this.getUserList()
        })
      },
      // 展示编辑用户的对话框
      async showEditDialog(id) {
        // console.log('id', id)
        const { data: res } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('查询用户信息失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed() {
        this.$refs.editFormRef.resetFields() // 重置对话框数据
      },
      // 修改用户信息并提交
      editUserInfo() {
        this.$refs.editFormRef.validate(async valid => {
          if (!valid) return
          const { data: res } = await this.$http.put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          if (res.meta.status !== 200) {
            return this.$message.error('更新用户信息失败')
          }
          // 关闭对话框
          this.editDialogVisible = false
          // 重新加载用户列表
          this.getUserList()
          this.$message.success('更新用户信息成功')
        })
      },
      // 根据 id 删除用户数据
      async removeUserById(id) {
        // 弹窗提示用户是否删除数据
        const confirmReuslt = await this.$confirm('此操作将永久删除该用户数据, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(error => error) // 取消删除
        /*
          如果用户确认删除，则返回值为字符串：confirm
          如果用户取消删除，则返回值为字符串：cancel
        */
        if (confirmReuslt !== 'confirm') {
          return this.$message.error('已取消删除')
        }
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getUserList()
      },
      // 展示分配角色的对话框
      async setRole(userInfo) {
        this.userInfo = userInfo
        // 在展示对话框之前，获取所有角色的列表
        const { data: res } = await this.$http.get('roles')
        if (res.meta.status !== 200) {
          return this.$message.error('获取角色列表失败')
        }
        this.rolesList = res.data
        this.setDialogVisible = true
      },
      // 点击确定按钮分配角色
      async saveRoleInfo() {
        if (!this.selectedRoleId) {
          return this.$message.error('请选择一个角色')
        }
        const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
        if (res.meta.status !== 200) {
          return this.$message.error('分配角色失败')
        }
        this.getUserList()
        this.setDialogVisible = false
      },
      // 监听分配角色对话框的关闭
      setRoleDialogClosed() {
        // 对话框关闭后将其置为初始状态
        this.selectedRoleId = ''
        this.userInfo = {}
      }
    }
  }
</script>

<style></style>
